In Korea and China, cherry elaeagnus (Elaeagnus multiflora Thunb.) has been used traditionally to treat cough, diarrhea, itching, and foul sores. Therefore, in this study, the ethanol and water extracts of cherry elaeagnus leaves were examined for their antioxidant activities. The ethanol extract of the cherry elaeagnus leaves contained more phenolics than the water extract. All the cherry elaeagnus leaf extracts had higher 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging ability than ascorbic acid at concentrations of 250-1,000㎍/mL. The ethanol extract also showed higher superoxide dismutase (SOD)-like activity compared to the water extract. Furthermore, the SOD-like activity of the ethanol extract amounted to 89% of that of ascorbic acid at a concentration of 500㎍/mL. The nitrite scavenging ability and xanthine oxidase inhibitory (XOI) activity of the ethanol extract were higher than those of the water extract. In particular, the ethanol extract had higher XOI activity than ascorbic acid at a concentration of 1,000㎍/mL.
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References Abstract Introduction Materials and Methods Materials Preparation of sample extract Determination of L-ascorbic acid content Determination of total phenolic content Determination of antioxidant activities Statistical analysis Results and Discussion Contents of ascorbic acid and total phenolics DPPH radical scavenging activity SOD-like activity Nitrite scavenging abiltiy XOI activity References